Jobs and Occupations Suffixes: er, or, ist

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Across
  1. 3. person who does astronomy
  2. 5. person who manages
  3. 10. person who bakes
  4. 11. person who pitches
  5. 12. person who does science
Down
  1. 1. person who writes novels
  2. 2. person who gardens
  3. 4. person who does biology
  4. 6. person who acts
  5. 7. person who does art
  6. 8. person who governs
  7. 9. person who plays piano